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Upper panel: (a) schematic illustration the preparation of the TTA-UCNPs containing PtOEP and DPA. (b) Cryo-TEM images of TTA-UC nanomicelles (c) UV-vis absorption spectra, TTA-UC emission spectra and phosphorescence emission spectrum of TTA-UC nanomicelles. Bottom panel (c-d) Confocal imaging of TTA-UC nanomicelles with 532 laser irradiation in 3T3 cell, (c) blue channel, (d) red channel and (d) overlay imaging.
